Four Pets That Break the Usual Mold

Not every good pet fits the dog-or-cat template, or even the lizard-in-a-tank template most people picture when they think "exotic." These four each ask something different of an owner, and each one rewards that difference in its own way.

Axolotl: The Salamander That Never Grows Up

An axolotl never leaves its larval stage, gills and all, which is part of what makes it look so unlike anything else in the pet world, and the same biology lets it regrow a lost leg or tail over several months. It's a cold-water species, needs no heater, and does best between 60 and 64°F, so keeping the tank cool enough is really the whole game here. Hands-off almost entirely, this is a pet you watch rather than touch.

The cold-water rule makes sense given where it comes from: Lake Xochimilco and Lake Chalco in Mexico City. Unlike other amphibians, an axolotl cannot metamorphose to live on land, so the tank is its whole world for a life that can run 10 to 15 years, and most adults reach 9 to 10 inches. Nearly all axolotls sold in the US and Canada descend from domestically raised stock, not wild animals.

Axolotl Cost · Handling · Health Issues · Tank Setup

Goldfish: Bigger Commitment Than the Bowl Suggests

The classic first pet almost everyone's had at some point, and almost everyone's kept wrong. A single fancy goldfish needs a real 20-gallon tank and filtration sized well beyond what its small body would suggest. Get the tank size right from the start and this is a genuinely long-lived, low-drama pet, some live well over a decade.

Goldfish Cost · Handling · Health Issues · Tank Setup

Chinchilla: Dust Baths, Not Water

Dense fur, a lot of personality, and one rule that surprises almost every new owner: chinchillas bathe in dust, never water. Add in heat sensitivity and a genuinely fragile skeleton, and this is a pet that asks for a bit more environmental awareness than most small mammals, in exchange for a coat softer than anything else you'll ever pet.

That coat is the reason for the dust. A chinchilla grows up to 60 hairs from each follicle, against 1 to 3 in a human, a pelt from the Andes Mountains of South America. The dust bath is volcanic ash, and more is not better: overuse irritates the eyes and airways, so the bath goes in for up to 15 minutes, two or three times a week. Chinchillas also sleep through most of the day and play at night.

Chinchilla Cost · Handling · Health Issues · Cage Setup

Hermit Crab: More Setup Than the Boardwalk Stand Let On

Sold at beach shops everywhere as a cheap impulse buy, hermit crabs need a considered setup: deep burrowing substrate, tightly controlled humidity, both fresh and saltwater pools, and a supply of spare shells to grow into. Get that right and they're social, long-lived (10 to 20 years or more), and a lot more interesting to watch than their reputation suggests.

The numbers behind that setup are specific. Hermit crabs breathe through modified gills, so humidity has to hold in the high 70s to low 80s percent, with temperatures of 75 to 85°F on a gentle gradient. The substrate is a play sand and coconut fiber mix damp enough to hold its shape when squeezed, because burrowing is essential for molting. Despite the name, they are social and belong in groups of at least two, with at least 10 gallons for each small or medium crab, so a pair starts at 20, and more room as they grow. Poor humidity, diet and space are the most common reasons a crab dies early, and many die within a year when kept in poor conditions.

Hermit Crab Cost · Handling · Health Issues · Enclosure Setup